Petra,
  A couple of tips to working with teens.  Sometimes, they are embarrassed
to ask their real questions.  If you can ask beforehand to have them write
questions on idex cards with no names, they will feel freer to ask.  I used
to have some good questions of my own on index cards that I would add to the
stack and no one would know.  This could spark discussions that might not
come up.  You can take cards with you and do it there if you want, too.  You
may get a lively group with many questions and not need the fillers.  They
will want to know what bf will do to their bodies;  I would talk about it
even if it does not come up.  Good luck!!
[log in to unmask]
     If instead of a gem or even a flower, we should cast the gift of a
loving thought into the heart of a friend, that would be giving as the
angels give.
                                                           --George
MacDonald